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We can set the cron to restart the server when it was down or not running. You can use following script to detect and restart the httpd,ngnix,Serv-U or any other services.

1) Create the file vi /root/autorestart.sh and add the following code and save it.
You can replace the Serv-U with any your service like httpd or ngnix
==============================

#!/bin/bash
# Restart command of your services
RESTART="/etc/init.d/Serv-U restart"
#Path to pgrep command
PGREP="/usr/bin/pgrep"

# Daemon name of your services
HTTPD="Serv-U"

# find pid of serivces
$PGREP ${HTTPD}

if [ $? -ne 0 ] # if service not running
then
# restart Service
$RESTART
fi

==============================

2) chdmo 755 /root/autorestart.sh

3) Set Cron to check every 3 minutes  vi /var/spool/cron/root

*/3 * * * * sh /root/autorestart.sh

4) Done

 


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